1,ac voltage stabilizer 2,small,light,high precision 3,wide regulation,reliable 4, ... excellent features,such as small waveform distortion,high efficiency,high power factor,free from the effort of ... 130VOutput voltage: 220+/-3% with 110V+/-3%Phase: single phaseFrequency 50Hz/60HzResponse time with 1 sec,against 10 ... Non-lack fidelity in waveform. SVC digital display fully automatica AC voltage stabilizer